If btc goes to 100k it will "only" have (more or less) doubled from its ATH.
From there it will need to rise another 100k in order to double again. I don't say this is not a good investment, but first of all crypto owners are spoiled, until up to now we were used to 10-fold, 20-fold + increases, so doubling the money has not been really special.
But this smaller reward ratio is paired with a much bigger risk ratio, since btc's swings in a correction period will also get bigger.
For hodlers who are in from the very beginning, it won't matter much probably, but where will btc find new buyers when it has reached 100k and needs to go up another 100k in order to double again in price?
And the fear of FOMO will also become smaller, as people will at one point accept, that the train has left the station.
Of course, should btc show convincing signs that it could reach 1 Million very quickly, then the whole picture changes.
When Bitcoin reaches 100M, then it will mark a turning point in the economic world. And markets will look at Bitcoin differently.
Even if you have to pay 20~30% in taxes, we are talking about you have 700~800k dollars to spend for each 1BTC. I believe that there will easily be people with a reserve of tens, if not hundreds, of Bitcoins. If the coin is worth 100M, a person who has 100 Bitcoins can buy half an Apple.
Valuing more will not reduce the number of people who want to buy, on the contrary, it will attract more people. Given the ease of acquiring Bitcoin, more people will buy sats. So, even with periods of lower growth, Bitcoin is already at a point, which is unlikely to go down dramatically, it can only slow its rise.
Long before my friend, long before a 100M price for Bitcoin would mark a turning point. Even at 0.5M or 1M only for Bitcoin would case immense change to the world. The money has to come from somewhere. People will start liquidating other assets putting pressure on the respective markets while strengthening the digital world even further.